I will take everyone's advice and drop Wren I guess, I don't want people to be confused by my name choices.

@goodkarmavt, I love Romilly too! I had kind of written it off though because I didn't want 2 daughters with names starting with Ro. And Wynne is cute but would people think I named her "win?" A nickname of Wynnie would obviously be implemented in some cases.

You have many great suggestions from people so far. I love Sage as a suggestion. I am a bit biased because Sage and Rowan have been a favorite sibset of mine for years.

A suggestion that popped into my head is Calla. I know you said you wanted to avoid the -a ending, but Calla sounds so good with Rowan to me. Also calla lily fits with nature. Probably not your style, but just wanted to throw it out there.